# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
""" 画图，学用circle画圆形 """

if __name__ == '__main__':
    from Tkinter import *
    canvas = Canvas(width=800,height=600,bg='#cccccc')
    canvas.pack(expand=YES,fill=BOTH)
    #canvas.create_oval(300,250,250,300,width=1)
    canvas.create_oval(0,600,600,0,width=1)
    k=1
    j=1
    for i in xrange(0,26):
        canvas.create_oval(310 - k,250-k,310+k,250+k,width=1)
        k += j
        j += 0.3
    mainloop()